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- Pyganodon grandis, the giant floater, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is fast-growing, large, and has a short lifespan. This species is native to the United States and southeastern Canada. Original description (Say 1829): "Shell very large, subovate; disk unequally wrinkled and undulated transversely, dark yellowish brown; umbo elevated; beak slightly elevated, with generally, two or three small sinuous, acute undulations; hinge margin slightly arquated, sometimes nearly rectilinear, somewhat angulated at its anterior termination, thence the edge descends by a nearly rectilinear, or slightly concave line to the anterior margin, which is considerably narrowed; sinus of the hinge margin concave; posterior margin widely rounded; within white margined, particularly before, with dusky." (en)
- Pyganodon grandis är en musselart som först beskrevs av Thomas Say 1829. Pyganodon grandis ingår i släktet Pyganodon och familjen målarmusslor. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade i Catalogue of Life. (sv)
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| rdfs:comment
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- Pyganodon grandis är en musselart som först beskrevs av Thomas Say 1829. Pyganodon grandis ingår i släktet Pyganodon och familjen målarmusslor. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade i Catalogue of Life. (sv)
- Pyganodon grandis, the giant floater, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is fast-growing, large, and has a short lifespan. This species is native to the United States and southeastern Canada. (en)
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_-_Unionidae_-_Mollusc_shell.jpeg?width=300)
_-_Unionidae_-_Mollusc_shell.jpeg){kind=link}